public function link($method = 'get')
{
if (!$this->nodes) {
throw new \InvalidArgumentException('The current node list is empty.');
}
$node = $this->getNode(0);
if (!$node instanceof \DOMElement) {
throw new \InvalidArgumentException(sprintf('The selected node should be instance of DOMElement, got "%s".', get_class($node)));
}
return new Link($node, $this->baseHref, $method);
}